hw/scsi.h

   1 #ifndef QEMU_HW_SCSI_H
   2 #define QEMU_HW_SCSI_H
   3
   4 #include "qdev.h"
   5 #include "block.h"
   6
   7 /* scsi-disk.c */
   8 enum scsi_reason {
   9     SCSI_REASON_DONE, /* Command complete.  */
  10     SCSI_REASON_DATA  /* Transfer complete, more data required.  */
  11 };
  12
  13 typedef struct SCSIBus SCSIBus;
  14 typedef struct SCSIDevice SCSIDevice;
  15 typedef struct SCSIDeviceInfo SCSIDeviceInfo;
  16 typedef void (*scsi_completionfn)(SCSIBus *bus, int reason, uint32_t tag,
  17                                   uint32_t arg);
  18
  19 typedef struct SCSIRequest {
  20     SCSIBus           *bus;
  21     SCSIDevice        *dev;
  22     uint32_t          tag;
  23     BlockDriverAIOCB  *aiocb;
  24 } SCSIRequest;
  25
  26 struct SCSIDevice
  27 {
  28     DeviceState qdev;
  29     uint32_t id;
  30     SCSIDeviceInfo *info;
  31 };
  32
  33 /* cdrom.c */
  34 int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track);
  35 int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num);
  36
  37 /* scsi-bus.c */
  38 typedef int (*scsi_qdev_initfn)(SCSIDevice *dev);
  39 struct SCSIDeviceInfo {
  40     DeviceInfo qdev;
  41     scsi_qdev_initfn init;
  42     void (*destroy)(SCSIDevice *s);
  43     int32_t (*send_command)(SCSIDevice *s, uint32_t tag, uint8_t *buf,
  44                             int lun);
  45     void (*read_data)(SCSIDevice *s, uint32_t tag);
  46     int (*write_data)(SCSIDevice *s, uint32_t tag);
  47     void (*cancel_io)(SCSIDevice *s, uint32_t tag);
  48     uint8_t *(*get_buf)(SCSIDevice *s, uint32_t tag);
  49 };
  50
  51 typedef void (*SCSIAttachFn)(DeviceState *host, BlockDriverState *bdrv,
  52               int unit);
  53 struct SCSIBus {
  54     BusState qbus;
  55     int busnr;
  56
  57     int tcq, ndev;
  58     scsi_completionfn complete;
  59
  60     SCSIDevice *devs[8];
  61 };
  62
  63 void scsi_bus_new(SCSIBus *bus, DeviceState *host, int tcq, int ndev,
  64                   scsi_completionfn complete);
  65 void scsi_qdev_register(SCSIDeviceInfo *info);
  66
  67 static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d)
  68 {
  69     return DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus);
  70 }
  71
  72 SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, DriveInfo *dinfo, int unit);
  73 void scsi_bus_legacy_handle_cmdline(SCSIBus *bus);
  74
  75 #endif